Which of the following devices has a 15-pin 3 row connector?
A.
Joystick port
B.
VGA monitor
C.
Parallel port
D.
Serial port
Explanation:
The VGA monitor uses a 15-pin 3 row connector to connect to a video adapter. Older Color Graphic
Array (CGA) video standard monitors use 9-
pin connectors to connect to DB-9 female connectors on CGA adapters.
Answer option D is incorrect. Serial port is the primary means for connecting modems and mouse to
a computer. There are two types of serial
port connectors, 9-pin and 25-pin. The word serial refers to the that data is sent in series, one bit at
a time, over a single wire. This
design is significantly slower than sending 8 bits at a time via a parallel channel, but serial signals can
travel much farther without
degradation.
Answer option A is incorrect. The joystick port has a 15-pin 2 row male connector.
Answer option C is incorrect. A parallel port is a 25-pin 2 row female connector on the back of a PC.
It is used to connect printers, scanners,
etc. A parallel port transfers information between computers and peripheral devices 8 bits at a time.
ECP, EPP, and SPP are types of parallel
ports.